George watt



G. WATT. Plow.

No. 224,750. Patented Feb. 17', 1880.

WITNESSES: H INVENTOR: W I 4, 170

fla $16M I if ATTORNQ Y? 1; NITED STATES PATENT OFFicE.

GEORGE WATT, OF RICHMOND, VIRGINIA.

SPECIFICATIONformingpart Of Letters Patent NO. 224,750, dated February 1'7, 1880.

. Application filed December 20, 1879.

, To all whom it may concern:

Be it known that l, GEORGE WATT, of Richmond, in the county of Henrico and State of Virginia, have invented a new and Improved Plow and I do hereby declare that the following is afull, clear,and exact description of the same.

My invention relates to the manner of attaching to the standard of a plow the point and share, the mold-board, (which may be in two detachable parts,) and the sole or wearing-piece of the land-side.

The attachment is efiected by means of two bolts and by projections or knobs and hooks, or equivalent deof the plow separated from each other.

section on line y y, Fig. 4. Fig. 4c is a side View of the plow complete.

The standard or stock A of the plow has the general form of such as have been heretofore known and used, but possesses certain peculiarities of construction, as hereinafter described, which adapt it for attachment of the point, mold-board, and sole.

. of the two-part mold-board O (3.

, The point and share B may be of the usual shape or pattern, but is provided with. knob and ear to on its upper side, and with hooks or flanges on its under side and bottom, by which means it is secured to the bed or lower portion of. the stock A, on which it rests. The knob a. is conical, and projects from the under surface of the point as well as from the upper edge thereof, so that when the pointis in place said knob a. lies in a concavity, c, of the bed and projects upward beneath the lower edge Thehooks b b catch. or hook under the beveled lower edge of the stock, and thus, when the mold-board is fastened to the plow standard or bed, the

point is secured immovably.

In place of the hooks or flanges b b a continuous flange or underlap may beemployed, the same extending along .the under side of the point B in a right line between the two points (hooks) b b.

Bysuch construction and mode of attachment of the point I dispense with such fastenings as a bolt or key and wedge, and avoid weakening the bed A and shear by forming a bolthole therein, as usual heretofore. The construction is likewise economical, since the respective parts are cast of the proper form or pattern in the first instance, and require little labor to tit them accurately together, and also do not require to be sothick and heavy as heretofore. Another and more important advan' tage is derived from the increased strength or power of resisting strains possessed by the point B in consequence of the location of the points of leverage, they being separated as widely as possible; whereas in the case of plows of the ordinary construction the bolt hole formed in the point to receive the fasteningbolt is located in or near the middle of the width of the shares bed.

The body 0 of the mold-board, or that portion of it which turns the furrow-slice, is shown made separate from the front portion, 0, which acts as a colter; but it may be made in one piece. Both parts 0 G are, however, detachable from the stock A, being secured by the following-described means: The body 0 has a book or car, d, and a knob, 6, cast on its under side, and when the former is applied to the flange of the standard A the car 61 hooks over a reduced or beveled portion of the rear edge of said flange in the same manner as the hooks b of the point B engage with the lower edge of the same. The part 0 is then secured by means of a screw-bolt,f, which passes through it near the front end thereof. Therefore both the point B and mold-board G are in reality held in place on the stock A by one bolt, which is a stronger and better means of fastening than that usually adopted.

The separate soil-cutting piece G, which is a segment of the mold-board and conforms to its general curvature, has a knob or conical projection, f, cast on its under side and near its upper end, while a hook or half-staple, 9, projects inward from its lower portion. The projection f enters a corresponding cavity, h, in the stock A, while the hook 9 passes through a hole in the same and catches over the edge of the metal, so that by inserting an iron or wooden key or wedge beneath it, as shown in Fig. 3, the colter G is firmly locked in place.

The hook 9 may be constructed of wrought or a cast metal and riveted to or cast to cutter 0.

By this construction the cutter O is adapted to be easily detached from the stock A for the purpose of grinding, and thereby sharpening, its cutting-edge, so that it may be kept in order for doing its work efficiently.

The sole or wearing-piece D is attached to the land-side proper like the mold-board to the stock-namely, by a hook or car, k, which catches over a beveled end of the land-side, and a knob, l, which is riveted to or else cast solid with the sole, and fits in a corresponding cavity, m, in the land-side, and a screw-bolt, n, that passes through the front end of the sole, as shown.

I do not claim, broadly, providing a plow point or share with a lug or hook for engaging the edge of the stock.

What I claim is 1. The combination of the plow-point having knob or ear (0 and lugs I) with the plow-stock A, having cavity 0, and the mold-board (J, as shown and described, said car being constructed to enter the cavity and project beneath the edge of the mold-board, asspecified.

2. The combination of the colter-section 0, having hook-boltgand lugf, with plow-stock A, having cavity h and a hole to receive said bolt, all as shown and described, for the purpose specified.

3. The plow stock or bed A, beveled on its lower edge, also on the rear edge of its lateral 

